We read thereלְבִנְיָמִן אָמַר יְדִיד יהוה יִשְׁכֹּן לָבֶטַח עָלָיו חֹפֵף עָלָיו כָּל הַיּוֹם וּבֵין כְּתֵפָיו שָׁכֵןKJV: "And of Benjamin he said, The beloved of the Lord shall dwell in safety by him; and the Lord shall cover him all the day long, and he shall dwell between his shoulders"with חֹפֵף XOPEP, of the root XPP, a bone fide member of the Hebrew root familyגבב, הבהב, חבב, כבב, קבבגפף, חפף, כפףThus, חפף is a variant of כפף, 'bend over, lean over, hover', as in Ps. 146:8יהוה פֹּקֵחַ עִוְרִים יהוה זֹקֵף כְּפוּפִיםNIV: "the Lord gives sight to the blind, the Lord lifts up those who are bowed down"כפף is also related to כפה, 'compel, suppress' (related in turns to כבה, 'extinguish, smother') as in Prov. 21:14מַתָּן בַּסֵּתֶר יִכְפֶּה אָף וְשֹׁחַד בַּחֵק חֵמָה עַזָּהKJV: "A gift in secret pacifieth anger: and a reward in the bosom strong wrath"Today חפיפה XAPIYPAH is 'congruence, overlapping, shampooing the hair'. We recall here also the derived post biblical גפף, 'hug, cuddle'.

We add here the relevant to חפףגֵב GEB, 'cistern, cavity, mound' (since "up" and "down" are symmetric (Compare גֵּב GAB, 'back', and גֵּו GEW, 'trunk'.)Jer. 14:3בָּאוּ עַל גֵּבִים לֹא מָצְאוּ מַיִםKJV: "they came to the pits, and found no water."Also כֵּף KEP, 'mound, promontory, cape' (as in cape of good hope כף התקווה הטובה)Job 30:6חֹרֵי עָפָר וְכֵפִיםKJV:"caves of the earth, and in the rocks."Also חוֹף XOP, 'shore, coast, beach'Jos. 9:1בָּהָר וּבַשְּׁפֵלָה וּבְכֹל חוֹף הַיָּם הַגָּדוֹלKJV: "in the hills, and in the valleys, and in all the coasts of the great sea."

Also of coming to mind here is חוֹב XOB, 'debt, obligation, burden', as in Ezekiel 18:7וְאִישׁ לֹא יוֹנֶה חֲבֹלָתוֹ חוֹב יָשִׁיב גְּזֵלָה לֹא יִגְזֹלNIV: "He does not oppress anyone, but returns what he took in pledge for a loan."Also in the sense of 'body, bosom', as in Job 31:33אִם כִּסִּיתִי כְאָדָם פְּשָׁעָי לִטְמוֹן בְּחֻבִּי עֲו‍ֹנִיKJV: "If I covered my transgressions as Adam, by hiding mine iniquity in my bosom"

This opposite sense of חַף is interesting.Job 33:9זַךְ אֲנִי בְּלִי פָשַׁע חַף אָנֹכִי וְלֹא עָו‍ֹן לִיNIV: "I am pure, I have done no wrong; I am clean and free from sin."KJV: I am clean without transgression, I am innocent; neither is there iniquity in me."